22213333 has 12 divisors (see below), whose sum is σ = 23436868. Its totient is φ = 21047040.

The previous prime is 22213313. The next prime is 22213343. The reversal of 22213333 is 33331222.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5098564 + 17114769 = 2258^2 + 4137^2 .

It is not a de Polignac number, because 22213333 - 2⁹ = 22212821 is a prime.

It is a Duffinian number.

22213333 is a modest number, since divided by 3333 gives 2221 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 22213333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51085 + ... + 51517.

Almost surely, 2^22213333 is an apocalyptic number.

It is an amenable number.

22213333 is a deficient number, since it is larger than the sum of its proper divisors (1223535).

22213333 is an equidigital number, since it uses as much as digits as its factorization.

22213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 523 counting only the distinct ones).

The product of its digits is 648, while the sum is 19.

The square root of 22213333 is about 4713.1022692066. The cubic root of 22213333 is about 281.1067294657.

Adding to 22213333 its reverse (33331222), we get a palindrome (55544555).

The spelling of 22213333 in words is "twenty-two million, two hundred thirteen thousand, three hundred thirty-three".